Vault-light lens-holder.



E. J. ALFIERES.

VAULT LIGHT LENS HOLDER.

APPLICATION FILED NOV, 11. 1915. RENEWED MAR. 17. 1911.

Patented July 3,1917.

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EMANUEL J. ALEIEans, on NEW YORK, iv. to, ssrenon or ONE-HALF TO CYRIL DE w raAL or RIDGEFIELD PARK, NEW JERSEY.

VAULT-LIGHT LENS-HOLDER Specification of Letters Patent.

Patented July 3, 1917.

Application filed November 11,1915, Serial No. 60,852. Renewed. March 17 1917. Serial No. 155,611.

lowing is a Specification.

This invention relates to vault light lens holders, for use in concrete sidewalks and other footways, or in the steps of stairways,

wherein are secured series of transparent bodies with the intention of permitting the light to pass and illuminate inclosures beneath. The object of this invention is the production of a holder to be embedded in the concrete, and having special construction with regard to certain of its parts whereby, as more fully set forth hereinbelow, it is found that the grout or concrete in semifluid state may be be caused to pass below and about and to fully surround and inclose the reinforce rods used to strengthen the pavement.

To illustrate the construction and arrangement of the essential parts of this invention, the accompanying drawings are provided. Figure l of the drawings represents a vertical section of a pavement constructed in accordance with this invention. Fig. 2 is a top plan view of several of the lens holders made in accordance with this invention and arranged as intended, with the positions of the reinforce rods shown before being inclosed in the concrete. Fig. 3 is a plan View from below, to set forth the customary form and arrangement of the projecting portions extending from the lower portion of each holder.

Throughout the drawings and description the same letter is used to refer to the same part.

Considering the drawings, the letter A designates a flat support, usually of wooden boards, upon which the holders B and b are placed in the order in which they are to be held by the cementitious material.

In practice the holders are exteriorly provided with the interrupted ribs C and 0, that engage the concrete and serve to fix the holders securely in position.

It will be noted that the external wall of each holder tapers downwardly, the upper portion being of the greatest diameter.

At its lower edge each holder is provided surfaces are flush with the lower opening or mouth of the hollow cylindricalbody B of the holder. \Vhen the holders are placed upon the boards A the projections form a base for each holder to rest upon, with its axis verticalandperpendicular to the board A. It will be noted in Figs. 2 and 3, that the projections D have straight, converging edges at right angles with each other, and that corresponding edges come together when the holders are arranged upon the board A one in touch with another as shown. It will also be observed that the projections extend beyond the bodies or holders B, and keep the holders B some distance apart. In arranging the holders with respect to each other and in the positions they will finally be fixed by the concrete E, the projections D are so disposed that the spaces (Z come together and form between adjacent holders a space of double the area of a single space (Z. The reason for providing the open spaces will be made clear in connection with the description of the mode of operation of this invention hereinbelow.

In the customary manner, reinforce rods F and 7 are arranged between the holders usually extending at right angles with each other and one above the other. I

Each holder is formed with an internal ledge or shoulder a, to support the lens when placed in the holder.

The operation of this invention or manner of utilizing the same may be explained as follows:

As best shown in Fig. 2, it will be observed that the reinforce rods F and 7' pass over the spaces (Z and midway between the holders. In practice it is found that if the holders are not provided with the spaced projections D, the lower reinforce rods 7 will, occasionally and at certain points, drop down or become bent down until the support A is touched, and the concrete does not get beneath and around the rod, which is the condition desired, as no portion of the rods should be exposed in the completed structure. The most difiioult place to insure every time the complete inclosure of the rods by the concrete, is immediately between the holders where the body of the concrete has I I i l the least thickness. As illustrated in Fig. 1, the space between the projecting portions D permits the concrete to be introduced beneath the rod and entirely down to the board support A. In that way there is a full thickness of concrete between the holders and no portion of either red for even a small part of its length is without a complete covering of concrete. The finish and appearance of the completed structure is correspondingly added to.

Having now described this invention and explained the mode of its operation to attain the objects sought, what I claim is 1. A vault light lens holder, having a hollow cylindrical body or holder, and a plurality of flat projections flush with the bottom of the holder, the said projections having spaces between them, and the said projections having straight converging edges at right angles with each other, whereby corresponding spaces and corresponding edges of the said projections of contiguous holders may be arranged together.

2. A vault light lens holder, having a hollow cylindrical body or holder, the said holder being provided exteriorly with ribs constructed to engage concrete and to fix the holder in position, the said holders having a plurality of fiat projections flush with the bottom of the holder, the said projections having spaces between them, andthe said projections having straight converging edges at right angles with each other, whereby'corresponding spaces and corresponding 35 edges of the sai projections of contiguous holders may be arranged together.

In testimony whereof I ailix my signature.

EMANUEL J. ALFIERES.

Copies of this patent may be obtained for five cents each, by addressing the Gommissi'oner of Patents,

Washington, D. G. V 

